1. It took “40 YEARS” of being tested in the wilderness for the children of Israel to leave Egypt behind mentally and to cross into Canaan’s land. Long enough for the FIGHTING MEN of Egypt to die off.
3. They had to die off, because their minds couldn’t handle the transition. They were born and raised SLAVES in EGYPT what did they know about Canaan’s land? Moses went away for 40 days, and what did they do? They built a golden calf, why? Because their minds were STILL IN EGYPT!